Resistivity of Graphene Nanoribbon Interconnects

Abstract

Abstract-Graphene nanoribbon interconnects are fabricated, and the extracted resistivity is compared to that of Cu. It is found that the average resistivity at a given line-width (18nm<W<52nm) is about 3X that of a Cu wire, whereas the best GNR has a resistivity comparable to that of Cu. The conductivity is found to be limited by impurity scattering as well as LER scattering; as a result, the best reported GNR resistivity is 3X the limit imposed by substrate phonon scattering. This study reveals that even moderate-quality graphene nanowires have the potential to outperform Cu for use as on-chip interconnects.

Specific heat of twisted bilayer graphene: Engineering phonons by atomic plane rotations

“…Due to its high electron mobility and high thermal conductivity, graphene and few-layer graphene (FLG) are considered promising for applications in field-effect transistors [7], interconnects [8][9], thermal interface materials [10][11], and heat spreaders [12][13][14].…”

The c-axis thermal conductivity of graphite film of nanometer thickness measured by time resolved X-ray diffraction

“…The superior electrical conductivity of graphene, for example, has been exploited to create interconnects for nanoelectronic circuits that outperform their copper counterparts. 1,2 Going forward, the challenge in leveraging these materials for commercial applications is twofold: First is the ability to devise methods of synthesis that are scalable and controllable; second, and equally important, is the ability to characterize the properties of the synthesized nanostructures, which often differ significantly from the properties of bulk materials. Materials characterization at the nanoscale requires the atomic spatial resolution possible with techniques such as atomic force microscopy, electron microscopy, X-ray diffraction, and others.…”

Non-equilibrium thermal transport simulation of conical carbon nanofibers

“…It has been observed that multilayer graphene has a greater Seebeck coefficient compared to single layer graphene up to S=54µV/K [25]. For a low-defect CHNF, the upper limit of resistivity can be estimated using that observed for GNR ρ = 0.35 µΩ m [26]. This experimental result for GNR corresponds to the highest resistivity observed in that study, which maximizes the effect of edges.…”